4V7G

Crystal Structure of Lumazine Synthase from Bacillus Anthracis


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.50 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.235 
  • R-Value Observed: 0.236 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural study and thermodynamic characterization of inhibitor binding to lumazine synthase from Bacillus anthracis.

Morgunova, E.Illarionov, B.Saller, S.Popov, A.Sambaiah, T.Bacher, A.Cushman, M.Fischer, M.Ladenstein, R.

(2010) Acta Crystallogr D Biol Crystallogr 66: 1001-1011

  • DOI: 10.1107/S0907444910029690
  • Primary Citation of Related Structures:  
    4V7G

  • PubMed Abstract: 
  • The crystal structure of lumazine synthase from Bacillus anthracis was solved by molecular replacement and refined to R(cryst) = 23.7% (R(free) = 28.4%) at a resolution of 3.5 A. The structure reveals the icosahedral symmetry of the enzyme and specif ...

    The crystal structure of lumazine synthase from Bacillus anthracis was solved by molecular replacement and refined to R(cryst) = 23.7% (R(free) = 28.4%) at a resolution of 3.5 A. The structure reveals the icosahedral symmetry of the enzyme and specific features of the active site that are unique in comparison with previously determined orthologues. The application of isothermal titration calorimetry in combination with enzyme kinetics showed that three designed pyrimidine derivatives bind to lumazine synthase with micromolar dissociation constants and competitively inhibit the catalytic reaction. Structure-based modelling suggested the binding modes of the inhibitors in the active site and allowed an estimation of the possible contacts formed upon binding. The results provide a structural framework for the design of antibiotics active against B. anthracis.


    Organizational Affiliation

    Karolinska Institutet NOVUM, Center of Structural Biochemistry, Huddinge, Sweden.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
6,7-dimethyl-8-ribityllumazine synthaseA1A2A3A4AAABACADAEAFAGAHAIAJAKALAMANAOAPAQARASATAUAVAWAXAYAZB1B2B3B4BABBBCBDBEBFBGBHBIBJBKBLBMBNBOBPBQBRBSBTBUBVBWBXBYBZC1C2C3C4CACBCCCDCECFCGCHCICJCKCLCMCNCOCPCQCRCSCTCUCVCWCXCYCZ153Bacillus anthracisMutation(s): 0 
Gene Names: ribHBA_4334GBAA_4334BAS4021
EC: 2.5.1.78
Find proteins for Q81MB5 (Bacillus anthracis)
Explore Q81MB5 
Go to UniProtKB:  Q81MB5
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

Download CCD File 
A1, A2, A3, A4, AA, AB, AC, AD, AE, AF, AG, AH, AI, AJ, AK, AL, AM, AN, AO, AP, AQ, AR, AS, AT, AU, AV, AW, AX, AY, AZ, B1, B2, B3, B4, BA, BB, BC, BD, BE, BF, BG, BH, BI, BJ, BK, BL, BM, BN, BO, BP, BQ, BR, BS, BT, BU, BV, BW, BX, BY, BZ, C1, C2, C3, C4, CA, CB, CC, CD, CE, CF, CG, CH, CI, CJ, CK, CL, CM, CN, CO, CP, CQ, CR, CS, CT, CU, CV, CW, CX, CY, CZ
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.50 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.235 
  • R-Value Observed: 0.236 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 157.201α = 90
b = 222.237β = 90
c = 473.488γ = 90
Software Package:
Software NamePurpose
ADSCdata collection
MOLREPphasing
FFFEARmodel building
PHENIXrefinement
XDSdata reduction
SCALAdata scaling
FFFEARphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-07-09
    Type: Initial release
  • Version 1.1: 2014-12-10
    Changes: Other